401 - Unauthorized error in Postman

Hi,

I tried to delete a channel data using POSTMAN as described here https://www.mathworks.com/help/thingspeak/clearchannel.html in Examples section: Use POSTMAN to Clear Channel

The channel ID is correct, the write API key is correct, and the answer of postman after sending request is:

{

"status": "401",

"error": {

"error_code": "error_auth_required",

"message": "Authorization Required",

"details": "Please provide proper authentication details."

}

}

I already tried to authorize me in Authorization tab using Basic Auth (username and password), but the result is the same.

I already tried to use api_key in the request command directly:

https://api.thingspeak.com/channels/1234567/feeds.json?api_key=XXXXXXXXXXXXXXXX

The result is the same. 🙁

Does this channel deletion method work at all on ThingSpeak?

Answer 1

[Vinod]

I suspect you are using your channel API key instead of the user API key.

Here's a curl request example:

curl --location --request DELETE 'https://api.thingspeak.com/channels/CHANNEL_ID/feeds.json' --form 'api_key="USER_API_KEY"'

The user API key is available from https://thingspeak.com/account/profile

[Klaus]

Thank you for your answer. It was the problem.

Now it is working well.